#include <iostream>
#include <string>
using namespace std;

// 定义 User 类
class User {
private:
    string Account;  // 用户账号
    string Password; // 用户密码
    string Email;    // 用户邮箱

public:
    // 构造函数：初始化账号和密码，默认邮箱为空
    User(string account, string password) {
        Account = account;
        Password = password;
        Email = "";
    }

    // 构造函数：初始化账号、密码和邮箱
    User(string account, string password, string email) {
        Account = account;
        Password = password;
        Email = email;
    }

    // 显示用户信息
    void ShowInfo() {
        cout << "Account: " << Account << endl;
        cout << "Password: " << Password << endl;
        cout << "Email: " << Email << endl;
    }
};

int main() {
    // 创建用户对象
    User user1("Trump", "123456");
    User user2("Biden", "654321", "Biden@us.gov");

    // 显示用户信息
    user1.ShowInfo();
    user2.ShowInfo();

    return 0;
}
